Recently the awful noises my car tends to make got much much worse and we have come to the conclusion that my harmonic balancer is shot because the noise comes from there and u can see it moving back and forth. What I would like to know is if I can just replace it with a pulley or if I need a new one. Also Im doing a 6 bolt swap in a couple months, if I can just buy a pulley, will it work on the 7 and the 6 bolt? Thanks